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3 years ago

Which pair does not represent the probabilities of complimentary events?

Mathematics

1 answer:

Keith_Richards [23]3 years ago

6 0

Can we have a picture?

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When Luis begins painting, he realizes it takes him 45 seconds to complete 1 square foot. The room he is painting has 272 square

zepelin [54]

It will take Luis 12240 seconds to complete the project.

12240 seconds are 204 minutes when converted.

Step-by-step explanation:

Given,

Time taken to paint 1 square foot = 45 seconds

Time taken for 272 square feet = 45*272

Time taken for 272 square feet = 12240 seconds

We know that;

60 seconds = 1 minute

Therefore;

We will divide the total seconds by 60 to convert them into minutes.

12240 seconds = $\frac{12240}{60} = 204\ minutes$

It will take Luis 12240 seconds to complete the project.

12240 seconds are 204 minutes when converted.

Keywords: conversion, multiplication

Learn more about multiplication at:

#LearnwithBrainly

6 0

3 years ago

Kristen has 64 coins in her piggy bank. she has $9.25 in dimes and quarters. how many dimes and quarters does she have.

IRISSAK [1]

I believe she has 25 dimes in quarters and the rest in which is 9.00 in quarters

8 0

3 years ago

Write the standard form of the equation of the circle with center (7,1) that also contains the point (−1,−5).

Karo-lina-s [1.5K]

Answer:

$(x-7)^2+(y-1)^2=100$

Step-by-step explanation:

1) Find the radius

We can do this by using the distance equation with the centre (7,1) and the given point (-1,-5):

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$ where the two points are $(x_1,y_1)$ and $(x_2,y_2)$

Plug in the points (7,1) and (-1,-5)

$d=\sqrt{(-1-7)^2+(-5-1)^2}\\d=\sqrt{(-8)^2+(-6)^2}\\d=\sqrt{64+36}\\d=\sqrt{100}\\d=10$

Therefore, the radius of the circle is 10 units.

2) Plug the data into the equation of a circle

Equation of a circle (when not centred at the origin):

$(x-h)^2+(y-k)^2=r^2$ where the centre is $(h,k)$ and r is the radius

Plug in the centre (7,1) as (h,k)

$(x-7)^2+(y-1)^2=r^2$

Plug in the radius 10

$(x-7)^2+(y-1)^2=10^2\\(x-7)^2+(y-1)^2=100$

I hope this helps!

4 0

3 years ago

Simplify each of the following: (i) 175 x 175 + 2 x 175 x 25 + 25 x 25

igomit [66]

Answer:

40000

Step-by-step explanation:

$175 \times 175 = 30625 \\ 2 \times 175 \times 25 = 8750 \\ 25 \times 25 = 625 \\ 30625 + 8750 + 625 = 40000$

5 0

3 years ago

Morgan won $2,315 at a work raffle. They deposited $1898.30

Galina-37 [17]

Answer: 82%

Explanation:

1898.3/2315 x 100
0.82 x 100 = 82%

4 0

3 years ago